John Keller is the owner and head instructor of Gracie Barra Clearwater. John had been training in different martial arts since he was a teenager but found Brazilian jiu-jitsu in 2004 and immediately focused all of his time training jiu-jitsu under Eduardo De Lima.

After reaching blue belt, John added muay thai and MMA training under Roger Patrizzi. At purple belt, John began teaching classes at Gracie Barra Clearwater and gained competition experience in jiu-jitsu and MMA.

Since then, John has dedicated himself to teaching classes for all ages as well as specific classes for Law Enforcement. John believes in being able to teach jiu-jitsu in a safe and fun environment for all types of practitioners. John is currently a 2nd-degree black belt in Brazilian Jiu-Jitsu